Concrete chimney.



I. B. SPAULDING.

CONCRETE CHIMNEY.

APPLICATION FILED 0012, 1907.

Patented Mar. 16, 1909.

2 SHEETS-SHEET 1.

lav/ 1 ank/ i 0 0.. WASHINGTON. n4 c5 1. B. SPAULDING. GONORETE CHIMNEY.

APPLIOATION.IILED 001.2, 1907. 91 5,123. Patented Mar. 16, 1909.

2 SHEETS-SHEET 2,

ms umwls PETERS co., WASHINGTON, n. c.

IRA B. SPAULDING, OF SOUTH ROYALTON,

VERMONT.

CGNORETE CHIMNEY.

Specification of Letters Patent. Application filed October 2, 19-07.

Patented March 16, 1909. Serial No. 395,57

To all whom it may concern:

Be it known that I, Ina B. SPAULDING, a

citizen of the United States, residing at South Itoyalton, in the county of Windsor and State of Vermont, have invented a new and useful Improvement in Concrete Chimneys, of which the following is a specification.

This invention relates to concrete chimneys, the object being to provide a chin'iney formed or" a plurality of blocks having double walls, so that when the blocks are set up, a dead air space will be formed.

AJlOtl'lGI object of my invention is to provide a chimney composed of a series of blocks, laid one upon the other and interlocked, the blocks being secured together by cement mortar whereby they will be securely held in a rigid position at all times.

Another object of my invention is to provide cement blocks with a double dead-air space adapted to be used where the chimney passes through the roof, thereby preventing any liability of the roof catching on fire by an over-heated chimney.

With these various objects in view, the invention consists in the novel features of construction, combination and arrangement, of parts, hereinafter fully described and pointed out in the claims.

In the drawings forming a part of this specification :Figure 1 is a vertical sectional view through my improved chimney. Fig. 2 is a top plan view of one of the cement blocks. Fig. 3 is a top plan view of one of the blocks used where the chimney passes through the roof. Fig. 4 is a modified form of chimney. Fig. 5 is a top plan view of one of the blocks used in constructing the chimney as shown in Fig. 4. Fig. 6 is a vertical sectional view of one of the blocks detached, showing it applied to an ordinary briclochimney. Fig. 7 is a detail section taken through the chimney arranged in the corner, the block being pro vided with nipples for connecting it to the adjoining room.

In the drawings A indicates a cement block formed of an inner wall A and an outer wall A which are connected together by partitions A at their corners which are notched so that the space between the walls will communicate with each other. The upper end of the inner wall of the block being rabbeted, and the lower end having a downwardly projecting tongue, so that when one or more of these blocks are arranged one II I upon the other, they will be securely held in vertical position, it of course being understood that they are secured together by mortar arranged in their joints. To form the construction of the chimney shown in Fig. I arrange a series of these blocks, one upon another, and upon the top block I place a block B provided with a shoulder I5, on which is arranged a block C which extends through the roof of the building, and is provided with spaced walls C, C forming a douhie-air space, thewalls being connected together by partitions C (1*, inch are also notched, and these blocks are also formed with rabbeted upper edges and are provided with tongues on their lower edges. Upon this block I arrange a duplicate block D, on. which is arranged a similar block E, with the exception that the outer air-space is closed at its upper end by a shoulder E, and upon the block E, one upon the other, are arranged one or more blocks F which are constructed exactly like the block A with the exception that their outer walls suitable design, so as to form a neat chimney, and upon the upper block I arrange a cap G which is provided with a tongue G which fits in the rabbet oi the upper block, it of course being understood that these blocks and caps are also secured together by mortar, and that the ordinary hashing is used around the chimney where it passes through the roof.

In the modification shown in Fig. 4 I show a chimney provided with double flues formed of blocks iii and I which are provided with rabbeted co-acting edges which are locked together by irons having angled ends which are placed therein when the sections are set up, and it will be seen that the central ventilating space will be formed between the same which communicates with the air by an opening formed in the upper bloclr under the cap J, rranged thereon.

In Fig. 6 I have shown a portion of my im proved chimney K arranged on the top of an ordinary brick-chimney, which is especially useful in extending chimneys.

In Fig. 7 I have shown a block L provided with nipples L extending outwardly therefrom at right angles which is adapted to be used in connection with my chimney when placed in a corner of a building, so that the adjacent rooms can be readily connected thereto.

are formed with any l. l O

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A concrete block for chimneys having three concentric walls providing a straight, central, vertical passage way therethrough and two concentric vertically arranged air spaces formed around the central space between the walls, and a plurality of vertically arranged partitions connecting said walls.

2. A concrete chimneyc omprising a series of blocks placed vertically upon each other, each of said blocks being provided with two concentric walls providing a straight central vertical flue and an air space between saic walls concentric with said flue and without communication therewith, an exterior shoulder formed upon the top of one of said blocks a supplemental exterior wall surrounding the sides of one of said blocks, said wall being secured to and spaced from the outer wall of the above mentioned air space of said block, vertically arranged partitions connecting said supplemental walls and the walls of the air space, said supplemental wall resting upon the shoulder of the block below it and another block h aving a supplemental. wall sel l 1 l 1 l l l l cured to the block at the top on all sides, said supplemental wall resting upon the top of the supplemental wall of the block below it.

3. A chimney consisting of a plurality of blocks, each of which is provided with two concentric walls providing a central vertical flue and between. the walls a vertically arranged air space, an exterior shoulder formed on the top of one of said blocks and another block having a supplemental wall carried by the other blocks, said supplemental wall extending entirely around the block and forming a double air space, the lower edge of said wall resting upon the exterior shoulder of the first mentioned block, and a block provided with a supplemental wall, the upper edge of which is secured to the upper portion of the block and the lower edge of which rests upon the upper edge of the block of the supplemental wall beneath it said shoulder nd the up per supplemental wall closing the upper and lower ends of the air space formed by said supplemental walls.

. IRA B. SPAUL'DING.

Witnesses EDGAR J. Fish,

W ALTER R. SPAULDING. 

